<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="app">
        名字：
        <input type="text" v-model="name.name">
        姓
        <input type="text" v-model="name.age">
        =>
    
        {{ all }}
        
      </div>
</body>
<script src="./vue.js"></script>
<script>
    const vm=new Vue({
        el:'#app',
        data:{
         name:{
             name:'',
             age:''
         }   
        },
        computed:{
            all(){
                return this.name.name+this.name.age
            }
        }
        
    })
</script>
</html>